[s2e6] Revenge Of The Swarm -

The episode begins with Ben being attacked at night by what appears to be , a former Plumber and father of Ben's old friend, Elena. The team soon learns that Victor has actually been dead for a year, leading them to suspect the return of the Nanochip Queen .

: Nanomech (essential for fighting the chips) and Terraspin . Viewing Guide & Lore [S2E6] Revenge of the Swarm

: Watching the movie Ben 10: Alien Swarm is highly recommended before this episode to understand Ben and Elena's history and the origin of the Nanomech transformation. The episode begins with Ben being attacked at

: This episode retcons some elements of the movie, revealing that the "Queen" defeated previously was likely a decoy and that Elena has become the true host for the Hive. Viewing Guide & Lore : Watching the movie

: Ben manages to rescue Julie and defeats the swarm, but Elena escapes, leaving her future role as a friend or foe ambiguous. Key Episode Details Air Date : March 18, 2011.